Thank you so much, jcbresnik, for mentioning Inclined Bed Therapy here. I read several mentions of it in these comments, and Googled and researched it and was very quickly convinced of the importance of sleeping on a 5 degree incline with the head 6 inches higher than the feet.
I am already experiencing huge improvements in my MS symptoms, and many different areas, after only a few nights sleeping inclined. It is so nice to wake up clear-headed and without pain for the first time in many years, and to sleep through the night without having to get up 5-10 times to go to the bathroom. I also don't miss waking up with a puffy face and stuffy nose anymore either.
Finding out about Inclined Bed Therapy, which was discovered and has been researched by Andrew K. Fletcher since 1994, has been a huge blessing and something I hope everyone will try. We are not meant to sleep lying flat, and it is a very easy thing to correct which in turn creates extensive health benefits.
Thanks to everyone else who mentioned it here. And just to add to the list of things it can be very helpful for - Snoring, Sleep Apnea, GERD, Multiple Sclerosis, Parkinson's, Spinal Cord Injury, Chronic Sinusitis and Bronchitis, Fibromyalgia, Muscle Pain,Varicose Veins etc...
When I was a teenager, my orthodontist diagnosed me as a "tongue-thruster" and told me that it was the reason my teeth were crowded - because normally when the tongue is kept in its proper position pressing against the roof of the mouth, it helps the palate expand properly. As a tongue-thruster, my palate did not expand as much as it should have. I am somewhat better at keeping my tongue where it's supposed to be, but I still have to think about it sometimes.
Source: Doctor Mercola's site